Does the Blender Game Engine Support Texture Nodes?
If you are using GLSL shading mode, and the Nodes option is checked in the render tab of the properties window (by default it is); then the BGE supports material nodes. However procedural textures, and generated texture coordinates are not supported.




To be able to use your procedural material, you will have to bake it, then use the resulting image in a new material in the game.